Many top attractions in London, including St Paul's Cathedral, the London Eye and the Tower of London, are included in the 2FOR1 offer from the National Rail Service. Valid train tickets are required to redeem the offer, which otherwise is generally not available at London attractions.
There are over 150 different attractions to choose from in the 2FOR1 offer, ranging from theater tickets to museum entry and tours of famous sports grounds. Some of the most visited sites include the London Dungeon, Madame Tussauds waxworks and the London Zoo. Other, lesser-known attractions include visits to the home of Benjamin Franklin, Paradise Park and Alexandra Palace. Most attractions can be visited without prior booking, apart from theater tickets, which must be purchased in advance.
In order to redeem the 2FOR1 offer, travellers must have valid National Rail train tickets. There is also a voucher that must be filled out, which is available at National Rail stations or downloaded from the website and printed out. Each person must have his own individual ticket, and one voucher is required between two people. The train tickets must be valid for the day that the offer is redeemed and be presented, along with the completed voucher, at the attraction of choice.